#include <fstream>
#include <string.h>
using namespace std;

int t, v[] = {0,1,5,2,8,3,9,2,8,7,7,8,4,7,3,8,4,1,5,4,4,5,9,6,2,7,3,6,2,1,1,2,8,1,7,2,8,5,9,8,8,9,3,0,6,1,7,0,6,5,5,6,2,5,1,6,2,9,3,2,2,3,7,4,0,5,1,4,0,9,9,0,6,9,5,0,6,3,7,6,6,7,1,8,4,9,5,8,4,3,3,4,0,3,9,4,0,7,1,0,0};;
char n[102];

int uCif(int x) {
    int b = x%10;
    int e = x%4;
    if(!e)
        e = 4;
    int p = 1;
    for(int i = 1; i <= e; i++)
        p *= b;
    return p;
}

int main() {
    ifstream f("cifra.in");
    ofstream g("cifra.out");

    f >> t;
    for(int q = 0; q < t; q++) {
        f >> n;
        int x = strlen(n);
        if(x == 1)
            g << v[n[0]- '0'] << endl;
        else
            g << v[n[x-1]-'0' + 10*(n[x-2]-'0')] << endl;
    }

    f.close();
    g.close();
    return 0;
}